The following Firefox (Mozilla) browser settings are needed for optimal playback experience.

In Mozilla, open Tools >Options
- Click on the General icon
- Click on Manage Add-on button (The Add-ons window will appear.)
- Click on Plugins
- Make sure the following plugins are installed and enabled (if not, please install them):
- Microsoft Windows Media Player Firefox Plugin
- Tegrity Plugin
- Close the Add-ons window
- Click on the Content icon
- Make sure that the following check boxes are selected:
- Enable Javascript
- If pop-up windows are blocked, make sure to add the URL of your institution's Tegrity instance to the Exceptions list
- Click on the Applications icon
- Enter asf in the search field
- Make sure that asf files are associated with the Microsoft Windows Media Player Firefox Plugin
- Click the OK button

Also, make sure that you have the latest version of Microsoft Windows Media Player installed on your PC.